Finding the Fourth Proportional to 269,792.10, 404,801.55 and 144,987.30

Step by Step Solution

1. Step 1: Write the proportion equation
   269,792.10 : 404,801.55 = 144,987.30 : x
2. Step 2: Convert to fraction form
   269,792.10/404,801.55 = 144,987.30/x
3. Step 3: Cross multiply
   269,792.10x = 404,801.55 × 144,987.30
4. Step 4: Simplify right side
   269,792.10x = 58,691,083,770.32
5. Step 5: Solve for x
   x = 58,691,083,770.32/269,792.10
6. Step 6: Final answer
   x = 217,541.89